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This paper discusses the power management of standalone PV based Microgrid.PV based Microgrids can be of great importance in rural areas which are devoid of power through centralized Grid. Even a mesh microgrid can be devised with Solar PV systems located on different houses interconnected together. But there are certain challenges like voltage instability and other power quality problems which are to be addressed time to time to protect the Microgrid from collapsing. Addition of diesel generator help in resoration of voltage stability of the system through reactive power management. Further inclusion of FACTS devices improve the system stability as well as the damping of the system. System's behavior during different loading conditions has been monitored and contribution of solar power with different irradiations has been watched. [ABSTRACT FROM AUTHOR]

This paper presents a novel methodology for compensating reactive power in a microgrid, having a DFIG based wind-diesel system, to enhance the voltage stability of the hybrid system. UPFC as a FACTS device is proposed in order to improve the control of reactive power mismatch and the stability of the system. A small signal model of the wind-diesel system, DFIG based wind turbine system, UPFC and the controllers are designed for the stability analysis. Further, the voltage variation and reactive power compensation is analysed with the incorporation of proposed ANFIS based UPFC controller. Simulations are performed in MATLAB environment for transient stability analysis in a wind-diesel based microgrid with different wind power input and 2% step increase in load demand. Simulation results illustrate the efficiency and effectiveness of the proposed approach and its impact upon transient behaviour of the microgrid. [ABSTRACT FROM AUTHOR]

Abstract This work describes a number of soft-computing based solar forecasting techniques that facilitate the modelling of newly installed solar cell. The solar cell model is developed and validated against measured data. Prediction of solar radiation of a particular location depends upon number of inputs. So selection of most relevant input parameters is an important task for getting good predictions. The input parameters of the model used in this paper are sunshine duration, temperature, humidity where as the clearness index is considered as an output parameter. The magnitude of active current associated with PV inverter has been finalised by the solar based irradiation. The reactive current associated with the PV based inverter is controlled through the optimised solar radiation. [ABSTRACT FROM AUTHOR]